Correct answer: Bf51...a:b5 2.N:c5#[A] 1.N:f6? zz 1...K:b3[a] 2.Bd1#[Б] 1...K:b5/[б]/ 2.Bd7#[C] but 1...a:b5! 1.Ncd6?? (2.N:c5#[A]) but 1...K:b3[a]! 1.N